Summary & Overview
HCPCS J1590: Injection, gatifloxacin, 10 mg
HCPCS Level II code J1590 designates a 10 mg injection of gatifloxacin, a fluoroquinolone antibiotic administered parenterally. As an HCPCS Level II therapeutic injection code, J1590 is used on medical claims to identify the specific drug product delivered during patient encounters across outpatient clinics, hospital departments, and infusion settings. Nationally, accurate coding of injectable antimicrobials like gatifloxacin matters for clinical documentation, inventory tracking, and payer adjudication.
Key payers reviewed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coding context, typical sites of service, and what to expect in payer coverage patterns. The publication outlines benchmarking elements relevant to utilization and reimbursement, highlights recent policy considerations that affect injectable antibiotic billing, and provides clinical context for when parenteral gatifloxacin may appear on a claim.
This summary is intended for billing managers, revenue cycle professionals, and clinicians who need a concise reference to HCPCS Level II code J1590, how it is used in claims, and the payer landscape to consider when processing or reviewing related service lines.
Billing Code Overview
HCPCS Level II code J1590 represents Injection, gatifloxacin, 10 mg. This code describes a parenteral formulation of the fluoroquinolone antibiotic gatifloxacin administered as an injection.
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Service type: Injectable antibiotic administration
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Typical site of service: Administration typically occurs in outpatient clinic settings, hospital inpatient or outpatient departments, and infusion centers depending on clinical indication and setting of care.
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Clinical & Coding Specifications
Clinical Context
A middle-aged patient presents to an ambulatory infusion clinic with a bacterial ocular infection or other localized bacterial infection for which an ophthalmic or parenteral formulation of an older-generation fluoroquinolone is prescribed. The clinician orders J1590 (Injection, gatifloxacin, 10 mg). The typical workflow: the provider documents the diagnosis and indication, verifies allergy status, obtains informed consent for injection therapy, and places the order in the electronic health record. The pharmacy prepares the J1590 unit dose under sterile technique and delivers it to the procedure area. A licensed clinician (ophthalmologist, optometrist with injection privileges, or nurse under protocol) performs the injection or instillation per local policy, observes the patient for immediate adverse effects, documents lot numbers and site of administration, and provides aftercare instructions. Billing is submitted using HCPCS code J1590 for the drug, alongside any applicable administration or procedural CPT codes and diagnosis codes that justify medical necessity.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Distinct Procedural Service | When is billed on the same day as a separate, distinct procedure unrelated to the drug administration (to indicate distinct procedural service). |